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19011 Wood-Sno Road NE,Suite 100 <br /> Wood nvilie,WA 98072-4436 <br /> BE I,. <br /> Phone:425-814-8448 <br /> E N GI N E E•RIIti C Fax:425-821-2120 <br /> Pacific Ridge Homes Revision Date: 1111/2021 <br /> Thelon (Elevations A & B) <br /> Redundancy, p ,.o ® (Section 12.3.4) <br /> Design Base Shear <br /> S ms = F e S s (Eq. 11.4-1) S M j = F„S i (Eq. 11.4-2) <br /> = 1.80 = 0.90 <br /> S DS = %S Ms (Eq. 11.4-3) S o l = %S M I (Eq. 11.4-4) <br /> = 1.20 = 0.60 <br /> Seismic Design Category: Structure Period and Weight: <br /> Short Period-- D <br /> 1-Second Period-- D Cr = 0.020 Table 12.8-2 <br /> x = 0.75 <br /> Building Height(Mean Roof),h„ = 24 ft <br /> Approximate Fundamental Period, Ta = Ct (h„)" (Eq. 12.8-7) <br /> T= Ta = 0.22 <br /> Tz = 6 (Figs. 22-14 thru 22-17) <br /> Calculated design base shear. <br /> V= C s W (Eq. 12.8-1) <br /> SUS <br /> CS = (R (Eq. 12.8-2) <br /> 1� <br /> CS = 0.18 <br /> The total design base shear need not exceed: <br /> (Eq. 12.8-3) (Eq. 12.8-4) <br /> SDI <br /> S <br /> for T Ti Cs = for T > Tt CS = z iTL <br /> (TR <br /> � 0.) <br /> I CS = 0.43 Ca = 11.78 <br /> Cs = 0.43 Ts TL <br /> Cb = 0-64 1.5 times Cs in accordance with 11.4.8 <br /> The total design base shear shall not be less than: <br /> Cs = 0,044SDs1. >0.01 (Eq. 12.8-5) <br /> CS = 0.05 <br /> nor where S 0.6g: <br /> Cs = 0.5S,/(Rli.) (Eq. 12.8-6) <br /> Cs = 0.00 <br /> CS = 0.18 <br /> V= 0.18 W Date:4/6/2022 <br /> Page: ___1-1.3 <br />